August is one of the warmer months of the year in Salem, with average highs near 33.5°C and lows around 22.7°C (mean 28.1°C). It is a relatively wet time of year, averaging 83 mm of rainfall and 68% relative humidity across the period.
August is one of the warmer months of the year in Salem. Across 45 years of records, the warmest August in Salem was 2023 — when the month averaged 30.2°C — while the coldest was 2022 at 26.8°C. Typical August days reach 33.5°C with nights near 22.7°C. The long-term August temperature trend is broadly flat.
August is a relatively wet time of year in Salem, averaging 83 mm of rainfall. The wettest August on record was 2022 with 188 mm, while the driest was 2002 at 24 mm.
Relative humidity in Salem during August averages 68%. The most humid August was 2024 at 78%, and the least humid was 2002 at 59%.
August receives about 5.3 kWh/m²/day of solar energy in Salem. The sunniest Augusts were 2001 and 2016 at 5.9 kWh/m²/day, and the cloudiest was 1988 at 4.6.
Average wind speed in Salem during August is 2.8 m/s. The windiest August was 2002 at 3.6 m/s, while the calmest were 1998 and 2024 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.9°C | 28.0°C | 28.2°C | 28.3°C | 28.1°C | +0.2°C |
| Avg High | 33.6°C | 33.4°C | 33.6°C | 33.8°C | 33.1°C | -0.5°C |
| Avg Low | 22.2°C | 22.5°C | 22.7°C | 22.9°C | 23.1°C | +0.9°C |
| Avg Rain | 69 mm | 74 mm | 77 mm | 92 mm | 111 mm | +41 mm |
August temperatures in Salem have stayed relatively stable across the record.
August has ranged from a record low of 20.2°C (2010) to a record high of 39.5°C (2023).
Rainfall in August is a relatively wet time of year, averaging 83 mm, with a wettest year of 188 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Salem
August is a good time to visit Salem, with days averaging 33.5°C and nights around 22.7°C (mean 28.1°C, close to Salem's yearly average) and higher rainfall. January and December are marginally more temperate, but August still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 33.8°C | 28.7°C | 23.5°C | 37.5°C | 22.1°C | 55 mm | 67% | 2.3 m/s | 4.9 |
| 2024 | 32.0°C | 27.6°C | 23.3°C | 35.1°C | 21.6°C | 175 mm | 78% | 2 m/s | 5.4 |
| 2023 🔥 | 36.0°C | 30.2°C | 24.4°C | 39.5°C | 23.1°C | 75 mm | 61% | 2.3 m/s | 5.7 |
| 2022 ❄️ 🌧️ | 31.2°C | 26.8°C | 22.4°C | 34.7°C | 20.7°C | 188 mm | 78% | 2.2 m/s | 5.1 |
| 2021 | 33.4°C | 27.9°C | 22.4°C | 35.9°C | 20.6°C | 78 mm | 71% | 2.4 m/s | 5.1 |
| 2020 | 32.3°C | 27.5°C | 22.7°C | 35.3°C | 21.2°C | 92 mm | 75% | 2.4 m/s | 5.1 |
| 2019 | 33.0°C | 27.9°C | 22.8°C | 38.1°C | 21.0°C | 129 mm | 71% | 3.2 m/s | 4.9 |
| 2018 | 34.7°C | 28.7°C | 22.7°C | 37.2°C | 21.3°C | 42 mm | 65% | 3.4 m/s | 4.8 |
| 2017 | 33.0°C | 28.0°C | 23.1°C | 36.3°C | 21.7°C | 103 mm | 72% | 2.3 m/s | 5.1 |
| 2016 | 34.9°C | 29.0°C | 23.0°C | 37.5°C | 21.5°C | 40 mm | 64% | 2.8 m/s | 5.9 |
| 2015 | 35.4°C | 29.4°C | 23.5°C | 38.6°C | 21.0°C | 71 mm | 63% | 2.5 m/s | 5.8 |
| 2014 | 33.4°C | 28.2°C | 23.0°C | 35.8°C | 21.9°C | 83 mm | 68% | 2.7 m/s | 5.3 |
| 2013 | 33.6°C | 28.1°C | 22.6°C | 36.7°C | 21.4°C | 120 mm | 69% | 2.7 m/s | 5.5 |
| 2012 | 33.7°C | 28.2°C | 22.7°C | 36.9°C | 21.6°C | 84 mm | 67% | 2.6 m/s | 5.3 |
| 2011 | 33.6°C | 28.0°C | 22.5°C | 37.2°C | 21.1°C | 93 mm | 68% | 2.8 m/s | 5.3 |
| 2010 | 32.3°C | 27.5°C | 22.6°C | 36.9°C | 20.2°C | 154 mm | 75% | 2.4 m/s | 5 |
| 2009 | 33.9°C | 28.4°C | 22.9°C | 37.6°C | 21.3°C | 64 mm | 67% | 2.7 m/s | 5.7 |
| 2008 | 32.1°C | 27.2°C | 22.4°C | 35.6°C | 21.1°C | 147 mm | 73% | 2.2 m/s | 5.4 |
| 2007 | 32.5°C | 27.4°C | 22.3°C | 35.5°C | 21.2°C | 112 mm | 73% | 2.5 m/s | 5.4 |
| 2006 | 34.8°C | 29.0°C | 23.2°C | 38.4°C | 20.6°C | 101 mm | 63% | 3.3 m/s | 5.7 |
| 2005 | 35.0°C | 29.3°C | 23.5°C | 38.2°C | 22.1°C | 70 mm | 61% | 3.1 m/s | 5.6 |
| 2004 | 34.0°C | 28.1°C | 22.1°C | 37.1°C | 21.1°C | 35 mm | 67% | 3.2 m/s | 5.7 |
| 2003 | 33.3°C | 28.0°C | 22.8°C | 36.6°C | 21.6°C | 99 mm | 71% | 2.7 m/s | 5.6 |
| 2002 | 34.6°C | 29.0°C | 23.3°C | 37.4°C | 22.0°C | 24 mm | 59% | 3.6 m/s | 5.4 |
| 2001 | 34.2°C | 28.3°C | 22.4°C | 36.9°C | 21.3°C | 46 mm | 68% | 3 m/s | 5.9 |
| 2000 | 32.0°C | 27.1°C | 22.2°C | 34.9°C | 20.7°C | 76 mm | 72% | 3.1 m/s | 5.2 |
| 1999 | 33.6°C | 28.3°C | 22.9°C | 36.8°C | 21.2°C | 43 mm | 65% | 2.7 m/s | 5.4 |
| 1998 | 31.4°C | 27.1°C | 22.8°C | 35.7°C | 21.8°C | 155 mm | 78% | 2 m/s | 5.5 |
| 1997 | 34.6°C | 28.8°C | 22.9°C | 36.8°C | 20.8°C | 43 mm | 64% | 3.4 m/s | 4.9 |
| 1996 | 32.3°C | 27.1°C | 22.0°C | 36.6°C | 20.3°C | 145 mm | 72% | 2.8 m/s | 4.9 |
| 1995 | 32.9°C | 27.9°C | 22.9°C | 36.2°C | 21.6°C | 92 mm | 71% | 2.6 m/s | 5.1 |
| 1994 | 33.8°C | 28.3°C | 22.7°C | 37.7°C | 21.2°C | 25 mm | 65% | 3.1 m/s | 5.1 |
| 1993 | 33.7°C | 28.1°C | 22.4°C | 37.8°C | 21.1°C | 51 mm | 66% | 2.9 m/s | 5.2 |
| 1992 | 33.8°C | 28.1°C | 22.3°C | 37.1°C | 20.6°C | 36 mm | 66% | 3.4 m/s | 5.1 |
| 1991 | 33.2°C | 27.6°C | 21.9°C | 35.9°C | 20.8°C | 77 mm | 68% | 3.1 m/s | 5 |
| 1990 | 34.3°C | 28.4°C | 22.5°C | 37.7°C | 21.1°C | 68 mm | 64% | 3.5 m/s | 4.9 |
| 1989 | 34.8°C | 28.5°C | 22.2°C | 37.1°C | 21.0°C | 24 mm | 62% | 3.5 m/s | 5.3 |
| 1988 | 31.9°C | 27.2°C | 22.6°C | 35.8°C | 20.9°C | 96 mm | 74% | 2.4 m/s | 4.6 |
| 1987 | 33.4°C | 27.9°C | 22.4°C | 36.7°C | 21.1°C | 70 mm | 67% | 2.6 m/s | 5.3 |
| 1986 | 33.6°C | 27.8°C | 22.0°C | 37.1°C | 20.8°C | 107 mm | 65% | 3 m/s | 5.4 |
| 1985 | 33.7°C | 27.9°C | 22.1°C | 36.4°C | 21.1°C | 83 mm | 66% | 2.9 m/s | 5.3 |
| 1984 | 35.0°C | 28.4°C | 21.8°C | 37.4°C | 20.6°C | 53 mm | 63% | 3.3 m/s | 5.8 |
| 1983 | 33.9°C | 28.3°C | 22.8°C | 37.4°C | 21.0°C | 65 mm | 66% | 3.1 m/s | — |
| 1982 | 33.7°C | 28.0°C | 22.2°C | 38.6°C | 20.8°C | 28 mm | 65% | 3.3 m/s | — |
| 1981 | 32.8°C | 27.4°C | 21.9°C | 35.2°C | 20.5°C | 99 mm | 71% | 3 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 33.5°C with lows near 22.7°C (mean 28.1°C), based on 45 years of NASA POWER data.
August averages 83 mm of rainfall in Salem, a relatively wet time of year. The wettest on record was 188 mm in 2022.
The hottest August reached 39.5°C in 2023. The coldest dipped to 20.2°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 22.2°C to 23.2°C while daytime highs eased from 33.8°C to 33.3°C, narrowing the gap between day and night.
August is one of the warmer months of the year in Salem and a relatively wet time of year, so plan for around 33.5°C daytime highs and 22.7°C at night.
Not quite — August is the 7th coolest month in Salem, averaging 28.1°C.
For August in Salem, pack light, breathable clothing and sun protection, with typical highs of 33.5°C and lows of 22.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 68% — moderately humid.
Average wind speed in August is 2.8 m/s. The windiest August on record averaged 3.6 m/s (2002).
The wettest August on record was 2022 with 188 mm. On average, August sees 83 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Salem behaves each August, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for August specifically, along with year-by-year records and how the month has changed over the decades.
